If you need to ask a question on the FreeBSD-questions mailing list then
http://www.freebsd.org/doc/en_US.ISO8859-1/articles/\
freebsd-questions/index.html
contains lots of useful advice to help you get the best results.

If you `set filec' (file completion) in tcsh and write a part of the
filename, pressing TAB will show you the available choices when there
is more than one, or complete the filename if there's only one match.